Home / 285,275,430.40-427,913,145.60-69,864,678.40

Finding the Fourth Proportional to 285,275,430.40, 427,913,145.60 and 69,864,678.40

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Solution

The fourth proportional to 285,275,430.40, 427,913,145.60 and 69,864,678.40 is: 104,797,017.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,275,430.40 : 427,913,145.60 = 69,864,678.40 : x
  2. Step 2: Convert to fraction form
    285,275,430.40/427,913,145.60 = 69,864,678.40/x
  3. Step 3: Cross multiply
    285,275,430.40x = 427,913,145.60 × 69,864,678.40
  4. Step 4: Simplify right side
    285,275,430.40x = 29,896,014,300,476,380
  5. Step 5: Solve for x
    x = 29,896,014,300,476,380/285,275,430.40
  6. Step 6: Final answer
    x = 104,797,017.60

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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.