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Finding the Fourth Proportional to 578,001.20, 867,001.80 and 472,938.80

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Solution

The fourth proportional to 578,001.20, 867,001.80 and 472,938.80 is: 709,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,001.20 : 867,001.80 = 472,938.80 : x
  2. Step 2: Convert to fraction form
    578,001.20/867,001.80 = 472,938.80/x
  3. Step 3: Cross multiply
    578,001.20x = 867,001.80 × 472,938.80
  4. Step 4: Simplify right side
    578,001.20x = 410,038,790,889.84
  5. Step 5: Solve for x
    x = 410,038,790,889.84/578,001.20
  6. Step 6: Final answer
    x = 709,408.20

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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.