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Finding the Fourth Proportional to 487,533.70, 731,300.55 and 328,101.40

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Solution

The fourth proportional to 487,533.70, 731,300.55 and 328,101.40 is: 492,152.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,533.70 : 731,300.55 = 328,101.40 : x
  2. Step 2: Convert to fraction form
    487,533.70/731,300.55 = 328,101.40/x
  3. Step 3: Cross multiply
    487,533.70x = 731,300.55 × 328,101.40
  4. Step 4: Simplify right side
    487,533.70x = 239,940,734,275.77
  5. Step 5: Solve for x
    x = 239,940,734,275.77/487,533.70
  6. Step 6: Final answer
    x = 492,152.10

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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.