Home / 720,030.40-1,077,421.20-657,044.80

Finding the Fourth Proportional to 720,030.40, 1,077,421.20 and 657,044.80

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Solution

The fourth proportional to 720,030.40, 1,077,421.20 and 657,044.80 is: 983,172.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,030.40 : 1,077,421.20 = 657,044.80 : x
  2. Step 2: Convert to fraction form
    720,030.40/1,077,421.20 = 657,044.80/x
  3. Step 3: Cross multiply
    720,030.40x = 1,077,421.20 × 657,044.80
  4. Step 4: Simplify right side
    720,030.40x = 707,913,996,869.76
  5. Step 5: Solve for x
    x = 707,913,996,869.76/720,030.40
  6. Step 6: Final answer
    x = 983,172.37

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1.5x scale

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.