Home / 918,203,784.90-1,267,110,909.27-500,506,905.30

Finding the Fourth Proportional to 918,203,784.90, 1,267,110,909.27 and 500,506,905.30

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Solution

The fourth proportional to 918,203,784.90, 1,267,110,909.27 and 500,506,905.30 is: 690,693,907.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,203,784.90 : 1,267,110,909.27 = 500,506,905.30 : x
  2. Step 2: Convert to fraction form
    918,203,784.90/1,267,110,909.27 = 500,506,905.30/x
  3. Step 3: Cross multiply
    918,203,784.90x = 1,267,110,909.27 × 500,506,905.30
  4. Step 4: Simplify right side
    918,203,784.90x = 634,197,759,870,596,736
  5. Step 5: Solve for x
    x = 634,197,759,870,596,736/918,203,784.90
  6. Step 6: Final answer
    x = 690,693,907.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.