Home / 646,608,386.39-970,525,774.28-400,219,719.80

Finding the Fourth Proportional to 646,608,386.39, 970,525,774.28 and 400,219,719.80

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Solution

The fourth proportional to 646,608,386.39, 970,525,774.28 and 400,219,719.80 is: 600,709,117.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,608,386.39 : 970,525,774.28 = 400,219,719.80 : x
  2. Step 2: Convert to fraction form
    646,608,386.39/970,525,774.28 = 400,219,719.80/x
  3. Step 3: Cross multiply
    646,608,386.39x = 970,525,774.28 × 400,219,719.80
  4. Step 4: Simplify right side
    646,608,386.39x = 388,423,553,437,167,616
  5. Step 5: Solve for x
    x = 388,423,553,437,167,616/646,608,386.39
  6. Step 6: Final answer
    x = 600,709,117.94

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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.