Home / 760,720.13-1,049,826.58-421,188.38

Finding the Fourth Proportional to 760,720.13, 1,049,826.58 and 421,188.38

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Solution

The fourth proportional to 760,720.13, 1,049,826.58 and 421,188.38 is: 581,258.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,720.13 : 1,049,826.58 = 421,188.38 : x
  2. Step 2: Convert to fraction form
    760,720.13/1,049,826.58 = 421,188.38/x
  3. Step 3: Cross multiply
    760,720.13x = 1,049,826.58 × 421,188.38
  4. Step 4: Simplify right side
    760,720.13x = 442,174,750,209.04
  5. Step 5: Solve for x
    x = 442,174,750,209.04/760,720.13
  6. Step 6: Final answer
    x = 581,258.12

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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.