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Finding the Fourth Proportional to 550,390.20, 824,807.70 and 407,117.40

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Solution

The fourth proportional to 550,390.20, 824,807.70 and 407,117.40 is: 610,100.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,390.20 : 824,807.70 = 407,117.40 : x
  2. Step 2: Convert to fraction form
    550,390.20/824,807.70 = 407,117.40/x
  3. Step 3: Cross multiply
    550,390.20x = 824,807.70 × 407,117.40
  4. Step 4: Simplify right side
    550,390.20x = 335,793,566,323.98
  5. Step 5: Solve for x
    x = 335,793,566,323.98/550,390.20
  6. Step 6: Final answer
    x = 610,100.92

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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.