Home / 7,128,032.40-10,692,048.60-3,939,386.40

Finding the Fourth Proportional to 7,128,032.40, 10,692,048.60 and 3,939,386.40

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Solution

The fourth proportional to 7,128,032.40, 10,692,048.60 and 3,939,386.40 is: 5,909,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,032.40 : 10,692,048.60 = 3,939,386.40 : x
  2. Step 2: Convert to fraction form
    7,128,032.40/10,692,048.60 = 3,939,386.40/x
  3. Step 3: Cross multiply
    7,128,032.40x = 10,692,048.60 × 3,939,386.40
  4. Step 4: Simplify right side
    7,128,032.40x = 42,120,110,842,979.04
  5. Step 5: Solve for x
    x = 42,120,110,842,979.04/7,128,032.40
  6. Step 6: Final answer
    x = 5,909,079.60

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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.