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Finding the Fourth Proportional to 612,040.80, 918,752.40 and 472,418.40

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Solution

The fourth proportional to 612,040.80, 918,752.40 and 472,418.40 is: 709,161.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,040.80 : 918,752.40 = 472,418.40 : x
  2. Step 2: Convert to fraction form
    612,040.80/918,752.40 = 472,418.40/x
  3. Step 3: Cross multiply
    612,040.80x = 918,752.40 × 472,418.40
  4. Step 4: Simplify right side
    612,040.80x = 434,035,538,804.16
  5. Step 5: Solve for x
    x = 434,035,538,804.16/612,040.80
  6. Step 6: Final answer
    x = 709,161.12

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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.