Home / 900,210.51-1,242,170.24-497,828.43

Finding the Fourth Proportional to 900,210.51, 1,242,170.24 and 497,828.43

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Solution

The fourth proportional to 900,210.51, 1,242,170.24 and 497,828.43 is: 686,936.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,210.51 : 1,242,170.24 = 497,828.43 : x
  2. Step 2: Convert to fraction form
    900,210.51/1,242,170.24 = 497,828.43/x
  3. Step 3: Cross multiply
    900,210.51x = 1,242,170.24 × 497,828.43
  4. Step 4: Simplify right side
    900,210.51x = 618,387,657,882.78
  5. Step 5: Solve for x
    x = 618,387,657,882.78/900,210.51
  6. Step 6: Final answer
    x = 686,936.72

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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.