Home / 8,978,860.40-13,460,417.40-5,386,056.80

Finding the Fourth Proportional to 8,978,860.40, 13,460,417.40 and 5,386,056.80

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Solution

The fourth proportional to 8,978,860.40, 13,460,417.40 and 5,386,056.80 is: 8,074,362.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,978,860.40 : 13,460,417.40 = 5,386,056.80 : x
  2. Step 2: Convert to fraction form
    8,978,860.40/13,460,417.40 = 5,386,056.80/x
  3. Step 3: Cross multiply
    8,978,860.40x = 13,460,417.40 × 5,386,056.80
  4. Step 4: Simplify right side
    8,978,860.40x = 72,498,572,668,108.31
  5. Step 5: Solve for x
    x = 72,498,572,668,108.31/8,978,860.40
  6. Step 6: Final answer
    x = 8,074,362.38

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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.