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Finding the Fourth Proportional to 760,737.39, 1,049,850.39 and 421,205.64

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Solution

The fourth proportional to 760,737.39, 1,049,850.39 and 421,205.64 is: 581,281.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,737.39 : 1,049,850.39 = 421,205.64 : x
  2. Step 2: Convert to fraction form
    760,737.39/1,049,850.39 = 421,205.64/x
  3. Step 3: Cross multiply
    760,737.39x = 1,049,850.39 × 421,205.64
  4. Step 4: Simplify right side
    760,737.39x = 442,202,905,424.20
  5. Step 5: Solve for x
    x = 442,202,905,424.20/760,737.39
  6. Step 6: Final answer
    x = 581,281.94

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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.