Home / 907,256.90-1,252,014.67-499,387.78

Finding the Fourth Proportional to 907,256.90, 1,252,014.67 and 499,387.78

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Solution

The fourth proportional to 907,256.90, 1,252,014.67 and 499,387.78 is: 689,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,256.90 : 1,252,014.67 = 499,387.78 : x
  2. Step 2: Convert to fraction form
    907,256.90/1,252,014.67 = 499,387.78/x
  3. Step 3: Cross multiply
    907,256.90x = 1,252,014.67 × 499,387.78
  4. Step 4: Simplify right side
    907,256.90x = 625,240,828,767.99
  5. Step 5: Solve for x
    x = 625,240,828,767.99/907,256.90
  6. Step 6: Final answer
    x = 689,155.22

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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.