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Finding the Fourth Proportional to 570,130.17, 786,785.18 and 315,480.75

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Solution

The fourth proportional to 570,130.17, 786,785.18 and 315,480.75 is: 435,366.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,130.17 : 786,785.18 = 315,480.75 : x
  2. Step 2: Convert to fraction form
    570,130.17/786,785.18 = 315,480.75/x
  3. Step 3: Cross multiply
    570,130.17x = 786,785.18 × 315,480.75
  4. Step 4: Simplify right side
    570,130.17x = 248,215,577,097.88
  5. Step 5: Solve for x
    x = 248,215,577,097.88/570,130.17
  6. Step 6: Final answer
    x = 435,366.50

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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.