Home / 738,128.10-1,018,638.36-432,175.85

Finding the Fourth Proportional to 738,128.10, 1,018,638.36 and 432,175.85

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Solution

The fourth proportional to 738,128.10, 1,018,638.36 and 432,175.85 is: 596,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,128.10 : 1,018,638.36 = 432,175.85 : x
  2. Step 2: Convert to fraction form
    738,128.10/1,018,638.36 = 432,175.85/x
  3. Step 3: Cross multiply
    738,128.10x = 1,018,638.36 × 432,175.85
  4. Step 4: Simplify right side
    738,128.10x = 440,230,897,802.31
  5. Step 5: Solve for x
    x = 440,230,897,802.31/738,128.10
  6. Step 6: Final answer
    x = 596,415.30

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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.