Home / 738,360.16-1,018,937.64-398,828.68

Finding the Fourth Proportional to 738,360.16, 1,018,937.64 and 398,828.68

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Solution

The fourth proportional to 738,360.16, 1,018,937.64 and 398,828.68 is: 550,383.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,360.16 : 1,018,937.64 = 398,828.68 : x
  2. Step 2: Convert to fraction form
    738,360.16/1,018,937.64 = 398,828.68/x
  3. Step 3: Cross multiply
    738,360.16x = 1,018,937.64 × 398,828.68
  4. Step 4: Simplify right side
    738,360.16x = 406,381,553,963.52
  5. Step 5: Solve for x
    x = 406,381,553,963.52/738,360.16
  6. Step 6: Final answer
    x = 550,383.91

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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.