Home / 869,070.10-1,303,605.15-513,901.30

Finding the Fourth Proportional to 869,070.10, 1,303,605.15 and 513,901.30

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Solution

The fourth proportional to 869,070.10, 1,303,605.15 and 513,901.30 is: 770,851.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,070.10 : 1,303,605.15 = 513,901.30 : x
  2. Step 2: Convert to fraction form
    869,070.10/1,303,605.15 = 513,901.30/x
  3. Step 3: Cross multiply
    869,070.10x = 1,303,605.15 × 513,901.30
  4. Step 4: Simplify right side
    869,070.10x = 669,924,381,271.70
  5. Step 5: Solve for x
    x = 669,924,381,271.70/869,070.10
  6. Step 6: Final answer
    x = 770,851.95

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Double scale
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Similar ratio
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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.