Home / 1,378,314,475.12-1,902,234,781.59-783,688,055.75

Finding the Fourth Proportional to 1,378,314,475.12, 1,902,234,781.59 and 783,688,055.75

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Solution

The fourth proportional to 1,378,314,475.12, 1,902,234,781.59 and 783,688,055.75 is: 1,081,580,948.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,314,475.12 : 1,902,234,781.59 = 783,688,055.75 : x
  2. Step 2: Convert to fraction form
    1,378,314,475.12/1,902,234,781.59 = 783,688,055.75/x
  3. Step 3: Cross multiply
    1,378,314,475.12x = 1,902,234,781.59 × 783,688,055.75
  4. Step 4: Simplify right side
    1,378,314,475.12x = 1,490,758,677,551,881,984
  5. Step 5: Solve for x
    x = 1,490,758,677,551,881,984/1,378,314,475.12
  6. Step 6: Final answer
    x = 1,081,580,948.66

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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.