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Finding the Fourth Proportional to 522,009.20, 783,013.80 and 403,765.40

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Solution

The fourth proportional to 522,009.20, 783,013.80 and 403,765.40 is: 605,648.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,009.20 : 783,013.80 = 403,765.40 : x
  2. Step 2: Convert to fraction form
    522,009.20/783,013.80 = 403,765.40/x
  3. Step 3: Cross multiply
    522,009.20x = 783,013.80 × 403,765.40
  4. Step 4: Simplify right side
    522,009.20x = 316,153,880,162.52
  5. Step 5: Solve for x
    x = 316,153,880,162.52/522,009.20
  6. Step 6: Final answer
    x = 605,648.10

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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.