Home / 783,126.60-1,174,689.90-513,688.20

Finding the Fourth Proportional to 783,126.60, 1,174,689.90 and 513,688.20

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Solution

The fourth proportional to 783,126.60, 1,174,689.90 and 513,688.20 is: 770,532.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,126.60 : 1,174,689.90 = 513,688.20 : x
  2. Step 2: Convert to fraction form
    783,126.60/1,174,689.90 = 513,688.20/x
  3. Step 3: Cross multiply
    783,126.60x = 1,174,689.90 × 513,688.20
  4. Step 4: Simplify right side
    783,126.60x = 603,424,340,289.18
  5. Step 5: Solve for x
    x = 603,424,340,289.18/783,126.60
  6. Step 6: Final answer
    x = 770,532.30

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Half scale
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Double scale
Find fourth proportional to 783,127.60, 1,174,691.40 and 513,689.20
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.