Home / 760,648.89-1,139,315.31-380,907.32

Finding the Fourth Proportional to 760,648.89, 1,139,315.31 and 380,907.32

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Solution

The fourth proportional to 760,648.89, 1,139,315.31 and 380,907.32 is: 570,530.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,648.89 : 1,139,315.31 = 380,907.32 : x
  2. Step 2: Convert to fraction form
    760,648.89/1,139,315.31 = 380,907.32/x
  3. Step 3: Cross multiply
    760,648.89x = 1,139,315.31 × 380,907.32
  4. Step 4: Simplify right side
    760,648.89x = 433,973,541,367.07
  5. Step 5: Solve for x
    x = 433,973,541,367.07/760,648.89
  6. Step 6: Final answer
    x = 570,530.70

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Double scale
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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.