Home / 840,670.72-1,160,151.16-478,146.76

Finding the Fourth Proportional to 840,670.72, 1,160,151.16 and 478,146.76

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Solution

The fourth proportional to 840,670.72, 1,160,151.16 and 478,146.76 is: 659,857.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,670.72 : 1,160,151.16 = 478,146.76 : x
  2. Step 2: Convert to fraction form
    840,670.72/1,160,151.16 = 478,146.76/x
  3. Step 3: Cross multiply
    840,670.72x = 1,160,151.16 × 478,146.76
  4. Step 4: Simplify right side
    840,670.72x = 554,722,518,264.24
  5. Step 5: Solve for x
    x = 554,722,518,264.24/840,670.72
  6. Step 6: Final answer
    x = 659,857.07

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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.