Home / 426,355,547.20-639,533,320.80-153,753,870.40

Finding the Fourth Proportional to 426,355,547.20, 639,533,320.80 and 153,753,870.40

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Solution

The fourth proportional to 426,355,547.20, 639,533,320.80 and 153,753,870.40 is: 230,630,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,355,547.20 : 639,533,320.80 = 153,753,870.40 : x
  2. Step 2: Convert to fraction form
    426,355,547.20/639,533,320.80 = 153,753,870.40/x
  3. Step 3: Cross multiply
    426,355,547.20x = 639,533,320.80 × 153,753,870.40
  4. Step 4: Simplify right side
    426,355,547.20x = 98,330,723,322,764,816
  5. Step 5: Solve for x
    x = 98,330,723,322,764,816/426,355,547.20
  6. Step 6: Final answer
    x = 230,630,805.60

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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.