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Finding the Fourth Proportional to 760,805.58, 1,049,898.87 and 421,266.54

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Solution

The fourth proportional to 760,805.58, 1,049,898.87 and 421,266.54 is: 581,340.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,805.58 : 1,049,898.87 = 421,266.54 : x
  2. Step 2: Convert to fraction form
    760,805.58/1,049,898.87 = 421,266.54/x
  3. Step 3: Cross multiply
    760,805.58x = 1,049,898.87 × 421,266.54
  4. Step 4: Simplify right side
    760,805.58x = 442,287,264,314.81
  5. Step 5: Solve for x
    x = 442,287,264,314.81/760,805.58
  6. Step 6: Final answer
    x = 581,340.72

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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.