Home / 760,670.60-1,049,795.84-421,138.85

Finding the Fourth Proportional to 760,670.60, 1,049,795.84 and 421,138.85

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Solution

The fourth proportional to 760,670.60, 1,049,795.84 and 421,138.85 is: 581,210.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,670.60 : 1,049,795.84 = 421,138.85 : x
  2. Step 2: Convert to fraction form
    760,670.60/1,049,795.84 = 421,138.85/x
  3. Step 3: Cross multiply
    760,670.60x = 1,049,795.84 × 421,138.85
  4. Step 4: Simplify right side
    760,670.60x = 442,109,808,596.25
  5. Step 5: Solve for x
    x = 442,109,808,596.25/760,670.60
  6. Step 6: Final answer
    x = 581,210.59

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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.