Home / 513,820,120.64-709,072,466.72-278,870,784.16

Finding the Fourth Proportional to 513,820,120.64, 709,072,466.72 and 278,870,784.16

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Solution

The fourth proportional to 513,820,120.64, 709,072,466.72 and 278,870,784.16 is: 384,842,062.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,820,120.64 : 709,072,466.72 = 278,870,784.16 : x
  2. Step 2: Convert to fraction form
    513,820,120.64/709,072,466.72 = 278,870,784.16/x
  3. Step 3: Cross multiply
    513,820,120.64x = 709,072,466.72 × 278,870,784.16
  4. Step 4: Simplify right side
    513,820,120.64x = 197,739,594,820,471,936
  5. Step 5: Solve for x
    x = 197,739,594,820,471,936/513,820,120.64
  6. Step 6: Final answer
    x = 384,842,062.19

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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.