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Finding the Fourth Proportional to 690,570,973.68, 952,976,822.04 and 377,298,461.04

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Solution

The fourth proportional to 690,570,973.68, 952,976,822.04 and 377,298,461.04 is: 520,665,799.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,570,973.68 : 952,976,822.04 = 377,298,461.04 : x
  2. Step 2: Convert to fraction form
    690,570,973.68/952,976,822.04 = 377,298,461.04/x
  3. Step 3: Cross multiply
    690,570,973.68x = 952,976,822.04 × 377,298,461.04
  4. Step 4: Simplify right side
    690,570,973.68x = 359,556,688,362,481,984
  5. Step 5: Solve for x
    x = 359,556,688,362,481,984/690,570,973.68
  6. Step 6: Final answer
    x = 520,665,799.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.