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Finding the Fourth Proportional to 528,955.20, 793,432.80 and 429,422.40

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Solution

The fourth proportional to 528,955.20, 793,432.80 and 429,422.40 is: 644,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,955.20 : 793,432.80 = 429,422.40 : x
  2. Step 2: Convert to fraction form
    528,955.20/793,432.80 = 429,422.40/x
  3. Step 3: Cross multiply
    528,955.20x = 793,432.80 × 429,422.40
  4. Step 4: Simplify right side
    528,955.20x = 340,717,817,214.72
  5. Step 5: Solve for x
    x = 340,717,817,214.72/528,955.20
  6. Step 6: Final answer
    x = 644,133.60

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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.