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Finding the Fourth Proportional to 607,130.40, 910,695.60 and 429,837.60

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Solution

The fourth proportional to 607,130.40, 910,695.60 and 429,837.60 is: 644,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,130.40 : 910,695.60 = 429,837.60 : x
  2. Step 2: Convert to fraction form
    607,130.40/910,695.60 = 429,837.60/x
  3. Step 3: Cross multiply
    607,130.40x = 910,695.60 × 429,837.60
  4. Step 4: Simplify right side
    607,130.40x = 391,451,211,034.56
  5. Step 5: Solve for x
    x = 391,451,211,034.56/607,130.40
  6. Step 6: Final answer
    x = 644,756.40

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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.