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Finding the Fourth Proportional to 526,547.20, 789,820.80 and 521,298.40

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Solution

The fourth proportional to 526,547.20, 789,820.80 and 521,298.40 is: 781,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,547.20 : 789,820.80 = 521,298.40 : x
  2. Step 2: Convert to fraction form
    526,547.20/789,820.80 = 521,298.40/x
  3. Step 3: Cross multiply
    526,547.20x = 789,820.80 × 521,298.40
  4. Step 4: Simplify right side
    526,547.20x = 411,732,319,326.72
  5. Step 5: Solve for x
    x = 411,732,319,326.72/526,547.20
  6. Step 6: Final answer
    x = 781,947.60

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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.