Home / 811,999,330.65-1,120,559,905.61-440,721,438.57

Finding the Fourth Proportional to 811,999,330.65, 1,120,559,905.61 and 440,721,438.57

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Solution

The fourth proportional to 811,999,330.65, 1,120,559,905.61 and 440,721,438.57 is: 608,196,035.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,999,330.65 : 1,120,559,905.61 = 440,721,438.57 : x
  2. Step 2: Convert to fraction form
    811,999,330.65/1,120,559,905.61 = 440,721,438.57/x
  3. Step 3: Cross multiply
    811,999,330.65x = 1,120,559,905.61 × 440,721,438.57
  4. Step 4: Simplify right side
    811,999,330.65x = 493,854,773,596,496,192
  5. Step 5: Solve for x
    x = 493,854,773,596,496,192/811,999,330.65
  6. Step 6: Final answer
    x = 608,196,035.34

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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.