Home / 661,609,345.80-992,414,018.70-477,943,336.20

Finding the Fourth Proportional to 661,609,345.80, 992,414,018.70 and 477,943,336.20

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Solution

The fourth proportional to 661,609,345.80, 992,414,018.70 and 477,943,336.20 is: 716,915,004.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,609,345.80 : 992,414,018.70 = 477,943,336.20 : x
  2. Step 2: Convert to fraction form
    661,609,345.80/992,414,018.70 = 477,943,336.20/x
  3. Step 3: Cross multiply
    661,609,345.80x = 992,414,018.70 × 477,943,336.20
  4. Step 4: Simplify right side
    661,609,345.80x = 474,317,666,989,127,168
  5. Step 5: Solve for x
    x = 474,317,666,989,127,168/661,609,345.80
  6. Step 6: Final answer
    x = 716,915,004.30

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Double scale
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Similar ratio
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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.