Home / 1,008,622,967.40-1,392,346,017.38-651,564,840.88

Finding the Fourth Proportional to 1,008,622,967.40, 1,392,346,017.38 and 651,564,840.88

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Solution

The fourth proportional to 1,008,622,967.40, 1,392,346,017.38 and 651,564,840.88 is: 899,447,802.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,622,967.40 : 1,392,346,017.38 = 651,564,840.88 : x
  2. Step 2: Convert to fraction form
    1,008,622,967.40/1,392,346,017.38 = 651,564,840.88/x
  3. Step 3: Cross multiply
    1,008,622,967.40x = 1,392,346,017.38 × 651,564,840.88
  4. Step 4: Simplify right side
    1,008,622,967.40x = 907,203,711,265,646,336
  5. Step 5: Solve for x
    x = 907,203,711,265,646,336/1,008,622,967.40
  6. Step 6: Final answer
    x = 899,447,802.19

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Double scale
Find fourth proportional to 1,008,622,968.40, 1,392,346,018.76 and 651,564,841.88
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.