Home / 1,565,005.25-2,159,729.63-911,614.50

Finding the Fourth Proportional to 1,565,005.25, 2,159,729.63 and 911,614.50

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Solution

The fourth proportional to 1,565,005.25, 2,159,729.63 and 911,614.50 is: 1,258,041.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565,005.25 : 2,159,729.63 = 911,614.50 : x
  2. Step 2: Convert to fraction form
    1,565,005.25/2,159,729.63 = 911,614.50/x
  3. Step 3: Cross multiply
    1,565,005.25x = 2,159,729.63 × 911,614.50
  4. Step 4: Simplify right side
    1,565,005.25x = 1,968,840,845,648.12
  5. Step 5: Solve for x
    x = 1,968,840,845,648.12/1,565,005.25
  6. Step 6: Final answer
    x = 1,258,041.05

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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.