Home / 1,006,985.76-1,389,649.68-554,280

Finding the Fourth Proportional to 1,006,985.76, 1,389,649.68 and 554,280

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Solution

The fourth proportional to 1,006,985.76, 1,389,649.68 and 554,280 is: 764,911.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,006,985.76 : 1,389,649.68 = 554,280 : x
  2. Step 2: Convert to fraction form
    1,006,985.76/1,389,649.68 = 554,280/x
  3. Step 3: Cross multiply
    1,006,985.76x = 1,389,649.68 × 554,280
  4. Step 4: Simplify right side
    1,006,985.76x = 770,255,024,630.40
  5. Step 5: Solve for x
    x = 770,255,024,630.40/1,006,985.76
  6. Step 6: Final answer
    x = 764,911.54

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Double scale
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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.