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Finding the Fourth Proportional to 488,058.80, 732,088.20 and 429,009.80

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Solution

The fourth proportional to 488,058.80, 732,088.20 and 429,009.80 is: 643,514.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,058.80 : 732,088.20 = 429,009.80 : x
  2. Step 2: Convert to fraction form
    488,058.80/732,088.20 = 429,009.80/x
  3. Step 3: Cross multiply
    488,058.80x = 732,088.20 × 429,009.80
  4. Step 4: Simplify right side
    488,058.80x = 314,073,012,264.36
  5. Step 5: Solve for x
    x = 314,073,012,264.36/488,058.80
  6. Step 6: Final answer
    x = 643,514.70

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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.