Home / 760,707.28-1,049,808.87-421,175.53

Finding the Fourth Proportional to 760,707.28, 1,049,808.87 and 421,175.53

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Solution

The fourth proportional to 760,707.28, 1,049,808.87 and 421,175.53 is: 581,240.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,707.28 : 1,049,808.87 = 421,175.53 : x
  2. Step 2: Convert to fraction form
    760,707.28/1,049,808.87 = 421,175.53/x
  3. Step 3: Cross multiply
    760,707.28x = 1,049,808.87 × 421,175.53
  4. Step 4: Simplify right side
    760,707.28x = 442,153,808,533.21
  5. Step 5: Solve for x
    x = 442,153,808,533.21/760,707.28
  6. Step 6: Final answer
    x = 581,240.41

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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.