Home / 917,928.04-1,266,729.42-515,520.04

Finding the Fourth Proportional to 917,928.04, 1,266,729.42 and 515,520.04

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Solution

The fourth proportional to 917,928.04, 1,266,729.42 and 515,520.04 is: 711,411.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,928.04 : 1,266,729.42 = 515,520.04 : x
  2. Step 2: Convert to fraction form
    917,928.04/1,266,729.42 = 515,520.04/x
  3. Step 3: Cross multiply
    917,928.04x = 1,266,729.42 × 515,520.04
  4. Step 4: Simplify right side
    917,928.04x = 653,024,401,267.58
  5. Step 5: Solve for x
    x = 653,024,401,267.58/917,928.04
  6. Step 6: Final answer
    x = 711,411.32

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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.