Home / 1,009,128.76-1,392,592.62-556,419.76

Finding the Fourth Proportional to 1,009,128.76, 1,392,592.62 and 556,419.76

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Solution

The fourth proportional to 1,009,128.76, 1,392,592.62 and 556,419.76 is: 767,856.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009,128.76 : 1,392,592.62 = 556,419.76 : x
  2. Step 2: Convert to fraction form
    1,009,128.76/1,392,592.62 = 556,419.76/x
  3. Step 3: Cross multiply
    1,009,128.76x = 1,392,592.62 × 556,419.76
  4. Step 4: Simplify right side
    1,009,128.76x = 774,866,051,398.17
  5. Step 5: Solve for x
    x = 774,866,051,398.17/1,009,128.76
  6. Step 6: Final answer
    x = 767,856.47

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Double scale
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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.