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Finding the Fourth Proportional to 657,491.80, 986,237.70 and 545,298.70

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Solution

The fourth proportional to 657,491.80, 986,237.70 and 545,298.70 is: 817,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,491.80 : 986,237.70 = 545,298.70 : x
  2. Step 2: Convert to fraction form
    657,491.80/986,237.70 = 545,298.70/x
  3. Step 3: Cross multiply
    657,491.80x = 986,237.70 × 545,298.70
  4. Step 4: Simplify right side
    657,491.80x = 537,794,135,700.99
  5. Step 5: Solve for x
    x = 537,794,135,700.99/657,491.80
  6. Step 6: Final answer
    x = 817,948.05

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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.