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Finding the Fourth Proportional to 519,525.80, 778,899.90 and 283,135.40

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Solution

The fourth proportional to 519,525.80, 778,899.90 and 283,135.40 is: 424,491.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,525.80 : 778,899.90 = 283,135.40 : x
  2. Step 2: Convert to fraction form
    519,525.80/778,899.90 = 283,135.40/x
  3. Step 3: Cross multiply
    519,525.80x = 778,899.90 × 283,135.40
  4. Step 4: Simplify right side
    519,525.80x = 220,534,134,746.46
  5. Step 5: Solve for x
    x = 220,534,134,746.46/519,525.80
  6. Step 6: Final answer
    x = 424,491.21

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Double scale
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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.