Home / 830,642,705.80-1,245,964,058.70-345,905,528.20

Finding the Fourth Proportional to 830,642,705.80, 1,245,964,058.70 and 345,905,528.20

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Solution

The fourth proportional to 830,642,705.80, 1,245,964,058.70 and 345,905,528.20 is: 518,858,292.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,642,705.80 : 1,245,964,058.70 = 345,905,528.20 : x
  2. Step 2: Convert to fraction form
    830,642,705.80/1,245,964,058.70 = 345,905,528.20/x
  3. Step 3: Cross multiply
    830,642,705.80x = 1,245,964,058.70 × 345,905,528.20
  4. Step 4: Simplify right side
    830,642,705.80x = 430,985,855,842,839,296
  5. Step 5: Solve for x
    x = 430,985,855,842,839,296/830,642,705.80
  6. Step 6: Final answer
    x = 518,858,292.30

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.