Home / 755,328.21-1,042,118.14-428,587.17

Finding the Fourth Proportional to 755,328.21, 1,042,118.14 and 428,587.17

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Solution

The fourth proportional to 755,328.21, 1,042,118.14 and 428,587.17 is: 591,317.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,328.21 : 1,042,118.14 = 428,587.17 : x
  2. Step 2: Convert to fraction form
    755,328.21/1,042,118.14 = 428,587.17/x
  3. Step 3: Cross multiply
    755,328.21x = 1,042,118.14 × 428,587.17
  4. Step 4: Simplify right side
    755,328.21x = 446,638,464,428.26
  5. Step 5: Solve for x
    x = 446,638,464,428.26/755,328.21
  6. Step 6: Final answer
    x = 591,317.07

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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.