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Finding the Fourth Proportional to 514,947.40, 772,421.10 and 488,703.40

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Solution

The fourth proportional to 514,947.40, 772,421.10 and 488,703.40 is: 733,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,947.40 : 772,421.10 = 488,703.40 : x
  2. Step 2: Convert to fraction form
    514,947.40/772,421.10 = 488,703.40/x
  3. Step 3: Cross multiply
    514,947.40x = 772,421.10 × 488,703.40
  4. Step 4: Simplify right side
    514,947.40x = 377,484,817,801.74
  5. Step 5: Solve for x
    x = 377,484,817,801.74/514,947.40
  6. Step 6: Final answer
    x = 733,055.10

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Double scale
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Similar ratio
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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.