Home / 1,212,823.40-1,818,841.53-402,990.34

Finding the Fourth Proportional to 1,212,823.40, 1,818,841.53 and 402,990.34

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Solution

The fourth proportional to 1,212,823.40, 1,818,841.53 and 402,990.34 is: 604,354.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,823.40 : 1,818,841.53 = 402,990.34 : x
  2. Step 2: Convert to fraction form
    1,212,823.40/1,818,841.53 = 402,990.34/x
  3. Step 3: Cross multiply
    1,212,823.40x = 1,818,841.53 × 402,990.34
  4. Step 4: Simplify right side
    1,212,823.40x = 732,975,566,955.26
  5. Step 5: Solve for x
    x = 732,975,566,955.26/1,212,823.40
  6. Step 6: Final answer
    x = 604,354.74

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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.