Home / 745,328.68-1,028,646.48-423,143.08

Finding the Fourth Proportional to 745,328.68, 1,028,646.48 and 423,143.08

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Solution

The fourth proportional to 745,328.68, 1,028,646.48 and 423,143.08 is: 583,990.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,328.68 : 1,028,646.48 = 423,143.08 : x
  2. Step 2: Convert to fraction form
    745,328.68/1,028,646.48 = 423,143.08/x
  3. Step 3: Cross multiply
    745,328.68x = 1,028,646.48 × 423,143.08
  4. Step 4: Simplify right side
    745,328.68x = 435,264,639,778.36
  5. Step 5: Solve for x
    x = 435,264,639,778.36/745,328.68
  6. Step 6: Final answer
    x = 583,990.19

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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.