Home / 712,018.65-982,547.70-389,666.40

Finding the Fourth Proportional to 712,018.65, 982,547.70 and 389,666.40

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Solution

The fourth proportional to 712,018.65, 982,547.70 and 389,666.40 is: 537,718.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,018.65 : 982,547.70 = 389,666.40 : x
  2. Step 2: Convert to fraction form
    712,018.65/982,547.70 = 389,666.40/x
  3. Step 3: Cross multiply
    712,018.65x = 982,547.70 × 389,666.40
  4. Step 4: Simplify right side
    712,018.65x = 382,865,825,087.28
  5. Step 5: Solve for x
    x = 382,865,825,087.28/712,018.65
  6. Step 6: Final answer
    x = 537,718.82

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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.