Home / 760,830.90-1,049,979.90-421,299.15

Finding the Fourth Proportional to 760,830.90, 1,049,979.90 and 421,299.15

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Solution

The fourth proportional to 760,830.90, 1,049,979.90 and 421,299.15 is: 581,411.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,830.90 : 1,049,979.90 = 421,299.15 : x
  2. Step 2: Convert to fraction form
    760,830.90/1,049,979.90 = 421,299.15/x
  3. Step 3: Cross multiply
    760,830.90x = 1,049,979.90 × 421,299.15
  4. Step 4: Simplify right side
    760,830.90x = 442,355,639,387.09
  5. Step 5: Solve for x
    x = 442,355,639,387.09/760,830.90
  6. Step 6: Final answer
    x = 581,411.24

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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.