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Finding the Fourth Proportional to 964,392.80, 1,330,867 and 556,511.84

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Solution

The fourth proportional to 964,392.80, 1,330,867 and 556,511.84 is: 767,989.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    964,392.80 : 1,330,867 = 556,511.84 : x
  2. Step 2: Convert to fraction form
    964,392.80/1,330,867 = 556,511.84/x
  3. Step 3: Cross multiply
    964,392.80x = 1,330,867 × 556,511.84
  4. Step 4: Simplify right side
    964,392.80x = 740,643,242,965.28
  5. Step 5: Solve for x
    x = 740,643,242,965.28/964,392.80
  6. Step 6: Final answer
    x = 767,989.19

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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.