Home / 760,721.50-1,049,828.48-421,189.75

Finding the Fourth Proportional to 760,721.50, 1,049,828.48 and 421,189.75

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Solution

The fourth proportional to 760,721.50, 1,049,828.48 and 421,189.75 is: 581,260.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,721.50 : 1,049,828.48 = 421,189.75 : x
  2. Step 2: Convert to fraction form
    760,721.50/1,049,828.48 = 421,189.75/x
  3. Step 3: Cross multiply
    760,721.50x = 1,049,828.48 × 421,189.75
  4. Step 4: Simplify right side
    760,721.50x = 442,176,995,034.08
  5. Step 5: Solve for x
    x = 442,176,995,034.08/760,721.50
  6. Step 6: Final answer
    x = 581,260.02

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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.