Home / 708,407.48-977,625.18-402,478.28

Finding the Fourth Proportional to 708,407.48, 977,625.18 and 402,478.28

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Solution

The fourth proportional to 708,407.48, 977,625.18 and 402,478.28 is: 555,433.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,407.48 : 977,625.18 = 402,478.28 : x
  2. Step 2: Convert to fraction form
    708,407.48/977,625.18 = 402,478.28/x
  3. Step 3: Cross multiply
    708,407.48x = 977,625.18 × 402,478.28
  4. Step 4: Simplify right side
    708,407.48x = 393,472,900,931.09
  5. Step 5: Solve for x
    x = 393,472,900,931.09/708,407.48
  6. Step 6: Final answer
    x = 555,433.01

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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.