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Finding the Fourth Proportional to 708,561.95, 977,780.16 and 402,597.95

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Solution

The fourth proportional to 708,561.95, 977,780.16 and 402,597.95 is: 555,565.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,561.95 : 977,780.16 = 402,597.95 : x
  2. Step 2: Convert to fraction form
    708,561.95/977,780.16 = 402,597.95/x
  3. Step 3: Cross multiply
    708,561.95x = 977,780.16 × 402,597.95
  4. Step 4: Simplify right side
    708,561.95x = 393,652,283,077.77
  5. Step 5: Solve for x
    x = 393,652,283,077.77/708,561.95
  6. Step 6: Final answer
    x = 555,565.09

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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.