Home / 738,148.17-1,018,644.48-398,616.42

Finding the Fourth Proportional to 738,148.17, 1,018,644.48 and 398,616.42

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Solution

The fourth proportional to 738,148.17, 1,018,644.48 and 398,616.42 is: 550,090.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,148.17 : 1,018,644.48 = 398,616.42 : x
  2. Step 2: Convert to fraction form
    738,148.17/1,018,644.48 = 398,616.42/x
  3. Step 3: Cross multiply
    738,148.17x = 1,018,644.48 × 398,616.42
  4. Step 4: Simplify right side
    738,148.17x = 406,048,415,870.36
  5. Step 5: Solve for x
    x = 406,048,415,870.36/738,148.17
  6. Step 6: Final answer
    x = 550,090.66

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Double scale
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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.