Home / 1,397,786,357.19-1,928,985,547.29-771,295,129.59

Finding the Fourth Proportional to 1,397,786,357.19, 1,928,985,547.29 and 771,295,129.59

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Solution

The fourth proportional to 1,397,786,357.19, 1,928,985,547.29 and 771,295,129.59 is: 1,064,409,557.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,786,357.19 : 1,928,985,547.29 = 771,295,129.59 : x
  2. Step 2: Convert to fraction form
    1,397,786,357.19/1,928,985,547.29 = 771,295,129.59/x
  3. Step 3: Cross multiply
    1,397,786,357.19x = 1,928,985,547.29 × 771,295,129.59
  4. Step 4: Simplify right side
    1,397,786,357.19x = 1,487,817,157,674,277,632
  5. Step 5: Solve for x
    x = 1,487,817,157,674,277,632/1,397,786,357.19
  6. Step 6: Final answer
    x = 1,064,409,557.31

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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.