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Finding the Fourth Proportional to 555,605.52, 766,717.61 and 310,583.76

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Solution

The fourth proportional to 555,605.52, 766,717.61 and 310,583.76 is: 428,595.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,605.52 : 766,717.61 = 310,583.76 : x
  2. Step 2: Convert to fraction form
    555,605.52/766,717.61 = 310,583.76/x
  3. Step 3: Cross multiply
    555,605.52x = 766,717.61 × 310,583.76
  4. Step 4: Simplify right side
    555,605.52x = 238,130,038,172.01
  5. Step 5: Solve for x
    x = 238,130,038,172.01/555,605.52
  6. Step 6: Final answer
    x = 428,595.52

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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.