Home / 472,398,511.80-708,597,767.70-278,209,970.40

Finding the Fourth Proportional to 472,398,511.80, 708,597,767.70 and 278,209,970.40

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Solution

The fourth proportional to 472,398,511.80, 708,597,767.70 and 278,209,970.40 is: 417,314,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,398,511.80 : 708,597,767.70 = 278,209,970.40 : x
  2. Step 2: Convert to fraction form
    472,398,511.80/708,597,767.70 = 278,209,970.40/x
  3. Step 3: Cross multiply
    472,398,511.80x = 708,597,767.70 × 278,209,970.40
  4. Step 4: Simplify right side
    472,398,511.80x = 197,138,963,977,323,072
  5. Step 5: Solve for x
    x = 197,138,963,977,323,072/472,398,511.80
  6. Step 6: Final answer
    x = 417,314,955.60

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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.