Home / 712,746.93-983,591.19-390,468.72

Finding the Fourth Proportional to 712,746.93, 983,591.19 and 390,468.72

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Solution

The fourth proportional to 712,746.93, 983,591.19 and 390,468.72 is: 538,847.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,746.93 : 983,591.19 = 390,468.72 : x
  2. Step 2: Convert to fraction form
    712,746.93/983,591.19 = 390,468.72/x
  3. Step 3: Cross multiply
    712,746.93x = 983,591.19 × 390,468.72
  4. Step 4: Simplify right side
    712,746.93x = 384,061,592,962.58
  5. Step 5: Solve for x
    x = 384,061,592,962.58/712,746.93
  6. Step 6: Final answer
    x = 538,847.07

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.