Home / 760,832.30-1,049,980.23-421,300.55

Finding the Fourth Proportional to 760,832.30, 1,049,980.23 and 421,300.55

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Solution

The fourth proportional to 760,832.30, 1,049,980.23 and 421,300.55 is: 581,412.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,832.30 : 1,049,980.23 = 421,300.55 : x
  2. Step 2: Convert to fraction form
    760,832.30/1,049,980.23 = 421,300.55/x
  3. Step 3: Cross multiply
    760,832.30x = 1,049,980.23 × 421,300.55
  4. Step 4: Simplify right side
    760,832.30x = 442,357,243,138.23
  5. Step 5: Solve for x
    x = 442,357,243,138.23/760,832.30
  6. Step 6: Final answer
    x = 581,412.29

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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.