Home / 289,626,643.20-434,439,964.80-197,793,638.40

Finding the Fourth Proportional to 289,626,643.20, 434,439,964.80 and 197,793,638.40

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Solution

The fourth proportional to 289,626,643.20, 434,439,964.80 and 197,793,638.40 is: 296,690,457.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,626,643.20 : 434,439,964.80 = 197,793,638.40 : x
  2. Step 2: Convert to fraction form
    289,626,643.20/434,439,964.80 = 197,793,638.40/x
  3. Step 3: Cross multiply
    289,626,643.20x = 434,439,964.80 × 197,793,638.40
  4. Step 4: Simplify right side
    289,626,643.20x = 85,929,461,304,159,936
  5. Step 5: Solve for x
    x = 85,929,461,304,159,936/289,626,643.20
  6. Step 6: Final answer
    x = 296,690,457.60

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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.