Home / 912,216,767.42-1,258,869,060.79-535,889,216.68

Finding the Fourth Proportional to 912,216,767.42, 1,258,869,060.79 and 535,889,216.68

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Solution

The fourth proportional to 912,216,767.42, 1,258,869,060.79 and 535,889,216.68 is: 739,532,947.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,216,767.42 : 1,258,869,060.79 = 535,889,216.68 : x
  2. Step 2: Convert to fraction form
    912,216,767.42/1,258,869,060.79 = 535,889,216.68/x
  3. Step 3: Cross multiply
    912,216,767.42x = 1,258,869,060.79 × 535,889,216.68
  4. Step 4: Simplify right side
    912,216,767.42x = 674,614,354,884,953,472
  5. Step 5: Solve for x
    x = 674,614,354,884,953,472/912,216,767.42
  6. Step 6: Final answer
    x = 739,532,947.63

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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.