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Finding the Fourth Proportional to 549,497.70, 824,246.55 and 390,065.40

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Solution

The fourth proportional to 549,497.70, 824,246.55 and 390,065.40 is: 585,098.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,497.70 : 824,246.55 = 390,065.40 : x
  2. Step 2: Convert to fraction form
    549,497.70/824,246.55 = 390,065.40/x
  3. Step 3: Cross multiply
    549,497.70x = 824,246.55 × 390,065.40
  4. Step 4: Simplify right side
    549,497.70x = 321,510,060,224.37
  5. Step 5: Solve for x
    x = 321,510,060,224.37/549,497.70
  6. Step 6: Final answer
    x = 585,098.10

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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.