Home / 898,128,347.80-1,347,192,521.70-511,144,821.40

Finding the Fourth Proportional to 898,128,347.80, 1,347,192,521.70 and 511,144,821.40

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Solution

The fourth proportional to 898,128,347.80, 1,347,192,521.70 and 511,144,821.40 is: 766,717,232.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,128,347.80 : 1,347,192,521.70 = 511,144,821.40 : x
  2. Step 2: Convert to fraction form
    898,128,347.80/1,347,192,521.70 = 511,144,821.40/x
  3. Step 3: Cross multiply
    898,128,347.80x = 1,347,192,521.70 × 511,144,821.40
  4. Step 4: Simplify right side
    898,128,347.80x = 688,610,480,895,762,176
  5. Step 5: Solve for x
    x = 688,610,480,895,762,176/898,128,347.80
  6. Step 6: Final answer
    x = 766,717,232.10

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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.