Home / 1,178,931,172.80-1,768,554,223.20-402,381,710.40

Finding the Fourth Proportional to 1,178,931,172.80, 1,768,554,223.20 and 402,381,710.40

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Solution

The fourth proportional to 1,178,931,172.80, 1,768,554,223.20 and 402,381,710.40 is: 603,626,309.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,931,172.80 : 1,768,554,223.20 = 402,381,710.40 : x
  2. Step 2: Convert to fraction form
    1,178,931,172.80/1,768,554,223.20 = 402,381,710.40/x
  3. Step 3: Cross multiply
    1,178,931,172.80x = 1,768,554,223.20 × 402,381,710.40
  4. Step 4: Simplify right side
    1,178,931,172.80x = 711,633,873,266,359,296
  5. Step 5: Solve for x
    x = 711,633,873,266,359,296/1,178,931,172.80
  6. Step 6: Final answer
    x = 603,626,309.73

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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.