Home / 760,150.40-1,139,764.80-380,629.76

Finding the Fourth Proportional to 760,150.40, 1,139,764.80 and 380,629.76

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Solution

The fourth proportional to 760,150.40, 1,139,764.80 and 380,629.76 is: 570,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,150.40 : 1,139,764.80 = 380,629.76 : x
  2. Step 2: Convert to fraction form
    760,150.40/1,139,764.80 = 380,629.76/x
  3. Step 3: Cross multiply
    760,150.40x = 1,139,764.80 × 380,629.76
  4. Step 4: Simplify right side
    760,150.40x = 433,828,402,280.45
  5. Step 5: Solve for x
    x = 433,828,402,280.45/760,150.40
  6. Step 6: Final answer
    x = 570,713.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.