Home / 760,428.20-1,049,281.08-420,895.64

Finding the Fourth Proportional to 760,428.20, 1,049,281.08 and 420,895.64

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Solution

The fourth proportional to 760,428.20, 1,049,281.08 and 420,895.64 is: 580,775.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,428.20 : 1,049,281.08 = 420,895.64 : x
  2. Step 2: Convert to fraction form
    760,428.20/1,049,281.08 = 420,895.64/x
  3. Step 3: Cross multiply
    760,428.20x = 1,049,281.08 × 420,895.64
  4. Step 4: Simplify right side
    760,428.20x = 441,637,831,706.49
  5. Step 5: Solve for x
    x = 441,637,831,706.49/760,428.20
  6. Step 6: Final answer
    x = 580,775.19

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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.