Home / 743,645.79-1,026,228.36-421,417.26

Finding the Fourth Proportional to 743,645.79, 1,026,228.36 and 421,417.26

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Solution

The fourth proportional to 743,645.79, 1,026,228.36 and 421,417.26 is: 581,554.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,645.79 : 1,026,228.36 = 421,417.26 : x
  2. Step 2: Convert to fraction form
    743,645.79/1,026,228.36 = 421,417.26/x
  3. Step 3: Cross multiply
    743,645.79x = 1,026,228.36 × 421,417.26
  4. Step 4: Simplify right side
    743,645.79x = 432,470,343,605.49
  5. Step 5: Solve for x
    x = 432,470,343,605.49/743,645.79
  6. Step 6: Final answer
    x = 581,554.21

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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.