Home / 917,939,860.40-1,266,720,051.48-500,243,177.36

Finding the Fourth Proportional to 917,939,860.40, 1,266,720,051.48 and 500,243,177.36

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Solution

The fourth proportional to 917,939,860.40, 1,266,720,051.48 and 500,243,177.36 is: 690,315,445.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,939,860.40 : 1,266,720,051.48 = 500,243,177.36 : x
  2. Step 2: Convert to fraction form
    917,939,860.40/1,266,720,051.48 = 500,243,177.36/x
  3. Step 3: Cross multiply
    917,939,860.40x = 1,266,720,051.48 × 500,243,177.36
  4. Step 4: Simplify right side
    917,939,860.40x = 633,668,063,377,977,984
  5. Step 5: Solve for x
    x = 633,668,063,377,977,984/917,939,860.40
  6. Step 6: Final answer
    x = 690,315,445.18

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