Home / 476,927,999.20-715,391,998.80-390,763,698.40

Finding the Fourth Proportional to 476,927,999.20, 715,391,998.80 and 390,763,698.40

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Solution

The fourth proportional to 476,927,999.20, 715,391,998.80 and 390,763,698.40 is: 586,145,547.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,927,999.20 : 715,391,998.80 = 390,763,698.40 : x
  2. Step 2: Convert to fraction form
    476,927,999.20/715,391,998.80 = 390,763,698.40/x
  3. Step 3: Cross multiply
    476,927,999.20x = 715,391,998.80 × 390,763,698.40
  4. Step 4: Simplify right side
    476,927,999.20x = 279,549,223,256,856,320
  5. Step 5: Solve for x
    x = 279,549,223,256,856,320/476,927,999.20
  6. Step 6: Final answer
    x = 586,145,547.60

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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.