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Finding the Fourth Proportional to 970,548,995.80, 1,455,823,493.70 and 644,031,645.40

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Solution

The fourth proportional to 970,548,995.80, 1,455,823,493.70 and 644,031,645.40 is: 966,047,468.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,548,995.80 : 1,455,823,493.70 = 644,031,645.40 : x
  2. Step 2: Convert to fraction form
    970,548,995.80/1,455,823,493.70 = 644,031,645.40/x
  3. Step 3: Cross multiply
    970,548,995.80x = 1,455,823,493.70 × 644,031,645.40
  4. Step 4: Simplify right side
    970,548,995.80x = 937,596,400,059,587,584
  5. Step 5: Solve for x
    x = 937,596,400,059,587,584/970,548,995.80
  6. Step 6: Final answer
    x = 966,047,468.10

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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.