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Finding the Fourth Proportional to 991,683,648.40, 1,487,525,472.60 and 884,545,142.80

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Solution

The fourth proportional to 991,683,648.40, 1,487,525,472.60 and 884,545,142.80 is: 1,326,817,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,683,648.40 : 1,487,525,472.60 = 884,545,142.80 : x
  2. Step 2: Convert to fraction form
    991,683,648.40/1,487,525,472.60 = 884,545,142.80/x
  3. Step 3: Cross multiply
    991,683,648.40x = 1,487,525,472.60 × 884,545,142.80
  4. Step 4: Simplify right side
    991,683,648.40x = 1,315,783,431,579,604,224
  5. Step 5: Solve for x
    x = 1,315,783,431,579,604,224/991,683,648.40
  6. Step 6: Final answer
    x = 1,326,817,714.20

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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.