Home / 553,475,983.10-830,788,421.18-320,761,373.63

Finding the Fourth Proportional to 553,475,983.10, 830,788,421.18 and 320,761,373.63

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Solution

The fourth proportional to 553,475,983.10, 830,788,421.18 and 320,761,373.63 is: 481,474,975.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,475,983.10 : 830,788,421.18 = 320,761,373.63 : x
  2. Step 2: Convert to fraction form
    553,475,983.10/830,788,421.18 = 320,761,373.63/x
  3. Step 3: Cross multiply
    553,475,983.10x = 830,788,421.18 × 320,761,373.63
  4. Step 4: Simplify right side
    553,475,983.10x = 266,484,835,167,838,016
  5. Step 5: Solve for x
    x = 266,484,835,167,838,016/553,475,983.10
  6. Step 6: Final answer
    x = 481,474,975.08

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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.