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Finding the Fourth Proportional to 710,818.20, 1,064,672.10 and 429,845.40

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Solution

The fourth proportional to 710,818.20, 1,064,672.10 and 429,845.40 is: 643,827.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,818.20 : 1,064,672.10 = 429,845.40 : x
  2. Step 2: Convert to fraction form
    710,818.20/1,064,672.10 = 429,845.40/x
  3. Step 3: Cross multiply
    710,818.20x = 1,064,672.10 × 429,845.40
  4. Step 4: Simplify right side
    710,818.20x = 457,644,404,693.34
  5. Step 5: Solve for x
    x = 457,644,404,693.34/710,818.20
  6. Step 6: Final answer
    x = 643,827.64

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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.