Home / 879,541,420.80-1,319,461,430.40-266,120,774.40

Finding the Fourth Proportional to 879,541,420.80, 1,319,461,430.40 and 266,120,774.40

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Solution

The fourth proportional to 879,541,420.80, 1,319,461,430.40 and 266,120,774.40 is: 399,226,334.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,541,420.80 : 1,319,461,430.40 = 266,120,774.40 : x
  2. Step 2: Convert to fraction form
    879,541,420.80/1,319,461,430.40 = 266,120,774.40/x
  3. Step 3: Cross multiply
    879,541,420.80x = 1,319,461,430.40 × 266,120,774.40
  4. Step 4: Simplify right side
    879,541,420.80x = 351,136,097,648,979,712
  5. Step 5: Solve for x
    x = 351,136,097,648,979,712/879,541,420.80
  6. Step 6: Final answer
    x = 399,226,334.71

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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.