Home / 745,642.68-1,028,923.70-418,930.20

Finding the Fourth Proportional to 745,642.68, 1,028,923.70 and 418,930.20

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Solution

The fourth proportional to 745,642.68, 1,028,923.70 and 418,930.20 is: 578,088.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,642.68 : 1,028,923.70 = 418,930.20 : x
  2. Step 2: Convert to fraction form
    745,642.68/1,028,923.70 = 418,930.20/x
  3. Step 3: Cross multiply
    745,642.68x = 1,028,923.70 × 418,930.20
  4. Step 4: Simplify right side
    745,642.68x = 431,047,207,328.45
  5. Step 5: Solve for x
    x = 431,047,207,328.45/745,642.68
  6. Step 6: Final answer
    x = 578,088.16

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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.