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Finding the Fourth Proportional to 659,502.20, 989,058.90 and 260,010.20

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Solution

The fourth proportional to 659,502.20, 989,058.90 and 260,010.20 is: 389,938.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,502.20 : 989,058.90 = 260,010.20 : x
  2. Step 2: Convert to fraction form
    659,502.20/989,058.90 = 260,010.20/x
  3. Step 3: Cross multiply
    659,502.20x = 989,058.90 × 260,010.20
  4. Step 4: Simplify right side
    659,502.20x = 257,165,402,400.78
  5. Step 5: Solve for x
    x = 257,165,402,400.78/659,502.20
  6. Step 6: Final answer
    x = 389,938.66

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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.