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Finding the Fourth Proportional to 615,642.30, 924,031.12 and 312,249.39

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Solution

The fourth proportional to 615,642.30, 924,031.12 and 312,249.39 is: 468,662.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,642.30 : 924,031.12 = 312,249.39 : x
  2. Step 2: Convert to fraction form
    615,642.30/924,031.12 = 312,249.39/x
  3. Step 3: Cross multiply
    615,642.30x = 924,031.12 × 312,249.39
  4. Step 4: Simplify right side
    615,642.30x = 288,528,153,365.86
  5. Step 5: Solve for x
    x = 288,528,153,365.86/615,642.30
  6. Step 6: Final answer
    x = 468,662.00

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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.