Home / 28,422,430.80-42,633,646.20-10,478,533.20

Finding the Fourth Proportional to 28,422,430.80, 42,633,646.20 and 10,478,533.20

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Solution

The fourth proportional to 28,422,430.80, 42,633,646.20 and 10,478,533.20 is: 15,717,799.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422,430.80 : 42,633,646.20 = 10,478,533.20 : x
  2. Step 2: Convert to fraction form
    28,422,430.80/42,633,646.20 = 10,478,533.20/x
  3. Step 3: Cross multiply
    28,422,430.80x = 42,633,646.20 × 10,478,533.20
  4. Step 4: Simplify right side
    28,422,430.80x = 446,738,077,143,753.81
  5. Step 5: Solve for x
    x = 446,738,077,143,753.81/28,422,430.80
  6. Step 6: Final answer
    x = 15,717,799.80

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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.