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Finding the Fourth Proportional to 576,746.80, 865,120.20 and 547,878.40

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Solution

The fourth proportional to 576,746.80, 865,120.20 and 547,878.40 is: 821,817.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,746.80 : 865,120.20 = 547,878.40 : x
  2. Step 2: Convert to fraction form
    576,746.80/865,120.20 = 547,878.40/x
  3. Step 3: Cross multiply
    576,746.80x = 865,120.20 × 547,878.40
  4. Step 4: Simplify right side
    576,746.80x = 473,980,670,983.68
  5. Step 5: Solve for x
    x = 473,980,670,983.68/576,746.80
  6. Step 6: Final answer
    x = 821,817.60

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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.