Home / 472,392,497.70-708,588,746.55-426,475,995.30

Finding the Fourth Proportional to 472,392,497.70, 708,588,746.55 and 426,475,995.30

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Solution

The fourth proportional to 472,392,497.70, 708,588,746.55 and 426,475,995.30 is: 639,713,992.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,497.70 : 708,588,746.55 = 426,475,995.30 : x
  2. Step 2: Convert to fraction form
    472,392,497.70/708,588,746.55 = 426,475,995.30/x
  3. Step 3: Cross multiply
    472,392,497.70x = 708,588,746.55 × 426,475,995.30
  4. Step 4: Simplify right side
    472,392,497.70x = 302,196,090,943,290,688
  5. Step 5: Solve for x
    x = 302,196,090,943,290,688/472,392,497.70
  6. Step 6: Final answer
    x = 639,713,992.95

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Similar ratio
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1.5x scale

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.