Home / 760,878.56-1,050,012.72-421,346.81

Finding the Fourth Proportional to 760,878.56, 1,050,012.72 and 421,346.81

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Solution

The fourth proportional to 760,878.56, 1,050,012.72 and 421,346.81 is: 581,458.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,878.56 : 1,050,012.72 = 421,346.81 : x
  2. Step 2: Convert to fraction form
    760,878.56/1,050,012.72 = 421,346.81/x
  3. Step 3: Cross multiply
    760,878.56x = 1,050,012.72 × 421,346.81
  4. Step 4: Simplify right side
    760,878.56x = 442,419,512,656.46
  5. Step 5: Solve for x
    x = 442,419,512,656.46/760,878.56
  6. Step 6: Final answer
    x = 581,458.77

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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.