Home / 749,345.90-1,124,018.85-433,640.30

Finding the Fourth Proportional to 749,345.90, 1,124,018.85 and 433,640.30

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Solution

The fourth proportional to 749,345.90, 1,124,018.85 and 433,640.30 is: 650,460.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,345.90 : 1,124,018.85 = 433,640.30 : x
  2. Step 2: Convert to fraction form
    749,345.90/1,124,018.85 = 433,640.30/x
  3. Step 3: Cross multiply
    749,345.90x = 1,124,018.85 × 433,640.30
  4. Step 4: Simplify right side
    749,345.90x = 487,419,871,319.66
  5. Step 5: Solve for x
    x = 487,419,871,319.66/749,345.90
  6. Step 6: Final answer
    x = 650,460.45

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Half scale
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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.