Home / 711,478.04-981,826.80-389,185.32

Finding the Fourth Proportional to 711,478.04, 981,826.80 and 389,185.32

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Solution

The fourth proportional to 711,478.04, 981,826.80 and 389,185.32 is: 537,068.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,478.04 : 981,826.80 = 389,185.32 : x
  2. Step 2: Convert to fraction form
    711,478.04/981,826.80 = 389,185.32/x
  3. Step 3: Cross multiply
    711,478.04x = 981,826.80 × 389,185.32
  4. Step 4: Simplify right side
    711,478.04x = 382,112,574,888.01
  5. Step 5: Solve for x
    x = 382,112,574,888.01/711,478.04
  6. Step 6: Final answer
    x = 537,068.68

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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.