Home / 912,000.10-1,258,386.89-572,315.26

Finding the Fourth Proportional to 912,000.10, 1,258,386.89 and 572,315.26

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Solution

The fourth proportional to 912,000.10, 1,258,386.89 and 572,315.26 is: 789,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,000.10 : 1,258,386.89 = 572,315.26 : x
  2. Step 2: Convert to fraction form
    912,000.10/1,258,386.89 = 572,315.26/x
  3. Step 3: Cross multiply
    912,000.10x = 1,258,386.89 × 572,315.26
  4. Step 4: Simplify right side
    912,000.10x = 720,194,020,130.94
  5. Step 5: Solve for x
    x = 720,194,020,130.94/912,000.10
  6. Step 6: Final answer
    x = 789,686.34

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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.