Home / 912,969,965.85-1,368,602,979.69-360,276,971.05

Finding the Fourth Proportional to 912,969,965.85, 1,368,602,979.69 and 360,276,971.05

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Solution

The fourth proportional to 912,969,965.85, 1,368,602,979.69 and 360,276,971.05 is: 540,079,251.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,969,965.85 : 1,368,602,979.69 = 360,276,971.05 : x
  2. Step 2: Convert to fraction form
    912,969,965.85/1,368,602,979.69 = 360,276,971.05/x
  3. Step 3: Cross multiply
    912,969,965.85x = 1,368,602,979.69 × 360,276,971.05
  4. Step 4: Simplify right side
    912,969,965.85x = 493,076,136,086,066,240
  5. Step 5: Solve for x
    x = 493,076,136,086,066,240/912,969,965.85
  6. Step 6: Final answer
    x = 540,079,251.81

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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.