Home / 745,430.55-1,028,666.07-455,526.87

Finding the Fourth Proportional to 745,430.55, 1,028,666.07 and 455,526.87

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Solution

The fourth proportional to 745,430.55, 1,028,666.07 and 455,526.87 is: 628,609.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,430.55 : 1,028,666.07 = 455,526.87 : x
  2. Step 2: Convert to fraction form
    745,430.55/1,028,666.07 = 455,526.87/x
  3. Step 3: Cross multiply
    745,430.55x = 1,028,666.07 × 455,526.87
  4. Step 4: Simplify right side
    745,430.55x = 468,585,035,142.30
  5. Step 5: Solve for x
    x = 468,585,035,142.30/745,430.55
  6. Step 6: Final answer
    x = 628,609.92

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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.