Home / 712,385.34-983,055.06-390,033.06

Finding the Fourth Proportional to 712,385.34, 983,055.06 and 390,033.06

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Solution

The fourth proportional to 712,385.34, 983,055.06 and 390,033.06 is: 538,225.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,385.34 : 983,055.06 = 390,033.06 : x
  2. Step 2: Convert to fraction form
    712,385.34/983,055.06 = 390,033.06/x
  3. Step 3: Cross multiply
    712,385.34x = 983,055.06 × 390,033.06
  4. Step 4: Simplify right side
    712,385.34x = 383,423,973,200.28
  5. Step 5: Solve for x
    x = 383,423,973,200.28/712,385.34
  6. Step 6: Final answer
    x = 538,225.52

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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.