Home / 745,433.80-1,028,670.56-455,530.12

Finding the Fourth Proportional to 745,433.80, 1,028,670.56 and 455,530.12

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Solution

The fourth proportional to 745,433.80, 1,028,670.56 and 455,530.12 is: 628,614.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,433.80 : 1,028,670.56 = 455,530.12 : x
  2. Step 2: Convert to fraction form
    745,433.80/1,028,670.56 = 455,530.12/x
  3. Step 3: Cross multiply
    745,433.80x = 1,028,670.56 × 455,530.12
  4. Step 4: Simplify right side
    745,433.80x = 468,590,423,637.27
  5. Step 5: Solve for x
    x = 468,590,423,637.27/745,433.80
  6. Step 6: Final answer
    x = 628,614.40

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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.