Home / 687,813.60-1,031,720.40-554,953.35

Finding the Fourth Proportional to 687,813.60, 1,031,720.40 and 554,953.35

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Solution

The fourth proportional to 687,813.60, 1,031,720.40 and 554,953.35 is: 832,430.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,813.60 : 1,031,720.40 = 554,953.35 : x
  2. Step 2: Convert to fraction form
    687,813.60/1,031,720.40 = 554,953.35/x
  3. Step 3: Cross multiply
    687,813.60x = 1,031,720.40 × 554,953.35
  4. Step 4: Simplify right side
    687,813.60x = 572,556,692,243.34
  5. Step 5: Solve for x
    x = 572,556,692,243.34/687,813.60
  6. Step 6: Final answer
    x = 832,430.03

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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.