Home / 711,019,964.04-1,065,365,279.21-378,674,117.43

Finding the Fourth Proportional to 711,019,964.04, 1,065,365,279.21 and 378,674,117.43

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Solution

The fourth proportional to 711,019,964.04, 1,065,365,279.21 and 378,674,117.43 is: 567,390,899.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,019,964.04 : 1,065,365,279.21 = 378,674,117.43 : x
  2. Step 2: Convert to fraction form
    711,019,964.04/1,065,365,279.21 = 378,674,117.43/x
  3. Step 3: Cross multiply
    711,019,964.04x = 1,065,365,279.21 × 378,674,117.43
  4. Step 4: Simplify right side
    711,019,964.04x = 403,426,256,843,518,912
  5. Step 5: Solve for x
    x = 403,426,256,843,518,912/711,019,964.04
  6. Step 6: Final answer
    x = 567,390,899.34

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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.