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Finding the Fourth Proportional to 631,279.63, 871,210.38 and 359,347.65

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Solution

The fourth proportional to 631,279.63, 871,210.38 and 359,347.65 is: 495,925.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,279.63 : 871,210.38 = 359,347.65 : x
  2. Step 2: Convert to fraction form
    631,279.63/871,210.38 = 359,347.65/x
  3. Step 3: Cross multiply
    631,279.63x = 871,210.38 × 359,347.65
  4. Step 4: Simplify right side
    631,279.63x = 313,067,402,708.61
  5. Step 5: Solve for x
    x = 313,067,402,708.61/631,279.63
  6. Step 6: Final answer
    x = 495,925.08

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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.