Home / 738,350.65-1,018,923.93-398,818.90

Finding the Fourth Proportional to 738,350.65, 1,018,923.93 and 398,818.90

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Solution

The fourth proportional to 738,350.65, 1,018,923.93 and 398,818.90 is: 550,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,350.65 : 1,018,923.93 = 398,818.90 : x
  2. Step 2: Convert to fraction form
    738,350.65/1,018,923.93 = 398,818.90/x
  3. Step 3: Cross multiply
    738,350.65x = 1,018,923.93 × 398,818.90
  4. Step 4: Simplify right side
    738,350.65x = 406,366,118,398.97
  5. Step 5: Solve for x
    x = 406,366,118,398.97/738,350.65
  6. Step 6: Final answer
    x = 550,370.10

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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.