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Finding the Fourth Proportional to 570,275.70, 787,005.28 and 315,626.82

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Solution

The fourth proportional to 570,275.70, 787,005.28 and 315,626.82 is: 435,578.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,275.70 : 787,005.28 = 315,626.82 : x
  2. Step 2: Convert to fraction form
    570,275.70/787,005.28 = 315,626.82/x
  3. Step 3: Cross multiply
    570,275.70x = 787,005.28 × 315,626.82
  4. Step 4: Simplify right side
    570,275.70x = 248,399,973,849.61
  5. Step 5: Solve for x
    x = 248,399,973,849.61/570,275.70
  6. Step 6: Final answer
    x = 435,578.75

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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.