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Finding the Fourth Proportional to 614,437.60, 921,656.40 and 585,407.20

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Solution

The fourth proportional to 614,437.60, 921,656.40 and 585,407.20 is: 878,110.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,437.60 : 921,656.40 = 585,407.20 : x
  2. Step 2: Convert to fraction form
    614,437.60/921,656.40 = 585,407.20/x
  3. Step 3: Cross multiply
    614,437.60x = 921,656.40 × 585,407.20
  4. Step 4: Simplify right side
    614,437.60x = 539,544,292,486.08
  5. Step 5: Solve for x
    x = 539,544,292,486.08/614,437.60
  6. Step 6: Final answer
    x = 878,110.80

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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.