Home / 749,345.40-1,124,018.10-521,022.60

Finding the Fourth Proportional to 749,345.40, 1,124,018.10 and 521,022.60

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Solution

The fourth proportional to 749,345.40, 1,124,018.10 and 521,022.60 is: 781,533.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,345.40 : 1,124,018.10 = 521,022.60 : x
  2. Step 2: Convert to fraction form
    749,345.40/1,124,018.10 = 521,022.60/x
  3. Step 3: Cross multiply
    749,345.40x = 1,124,018.10 × 521,022.60
  4. Step 4: Simplify right side
    749,345.40x = 585,638,832,909.06
  5. Step 5: Solve for x
    x = 585,638,832,909.06/749,345.40
  6. Step 6: Final answer
    x = 781,533.90

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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.