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Finding the Fourth Proportional to 657,602.40, 986,502.15 and 278,522.40

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Solution

The fourth proportional to 657,602.40, 986,502.15 and 278,522.40 is: 417,825.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,602.40 : 986,502.15 = 278,522.40 : x
  2. Step 2: Convert to fraction form
    657,602.40/986,502.15 = 278,522.40/x
  3. Step 3: Cross multiply
    657,602.40x = 986,502.15 × 278,522.40
  4. Step 4: Simplify right side
    657,602.40x = 274,762,946,423.16
  5. Step 5: Solve for x
    x = 274,762,946,423.16/657,602.40
  6. Step 6: Final answer
    x = 417,825.34

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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.