Home / 708,389,061.81-977,890,371.95-457,615,725.09

Finding the Fourth Proportional to 708,389,061.81, 977,890,371.95 and 457,615,725.09

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Solution

The fourth proportional to 708,389,061.81, 977,890,371.95 and 457,615,725.09 is: 631,712,198.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,389,061.81 : 977,890,371.95 = 457,615,725.09 : x
  2. Step 2: Convert to fraction form
    708,389,061.81/977,890,371.95 = 457,615,725.09/x
  3. Step 3: Cross multiply
    708,389,061.81x = 977,890,371.95 × 457,615,725.09
  4. Step 4: Simplify right side
    708,389,061.81x = 447,498,011,616,140,992
  5. Step 5: Solve for x
    x = 447,498,011,616,140,992/708,389,061.81
  6. Step 6: Final answer
    x = 631,712,198.48

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Double scale
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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.