Home / 766,315.13-1,057,547.70-426,783.38

Finding the Fourth Proportional to 766,315.13, 1,057,547.70 and 426,783.38

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Solution

The fourth proportional to 766,315.13, 1,057,547.70 and 426,783.38 is: 588,979.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,315.13 : 1,057,547.70 = 426,783.38 : x
  2. Step 2: Convert to fraction form
    766,315.13/1,057,547.70 = 426,783.38/x
  3. Step 3: Cross multiply
    766,315.13x = 1,057,547.70 × 426,783.38
  4. Step 4: Simplify right side
    766,315.13x = 451,343,776,629.49
  5. Step 5: Solve for x
    x = 451,343,776,629.49/766,315.13
  6. Step 6: Final answer
    x = 588,979.34

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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.