Home / 779,249,985.07-1,075,471,965.42-477,781,967.85

Finding the Fourth Proportional to 779,249,985.07, 1,075,471,965.42 and 477,781,967.85

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Solution

The fourth proportional to 779,249,985.07, 1,075,471,965.42 and 477,781,967.85 is: 659,404,712.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,249,985.07 : 1,075,471,965.42 = 477,781,967.85 : x
  2. Step 2: Convert to fraction form
    779,249,985.07/1,075,471,965.42 = 477,781,967.85/x
  3. Step 3: Cross multiply
    779,249,985.07x = 1,075,471,965.42 × 477,781,967.85
  4. Step 4: Simplify right side
    779,249,985.07x = 513,841,112,005,874,816
  5. Step 5: Solve for x
    x = 513,841,112,005,874,816/779,249,985.07
  6. Step 6: Final answer
    x = 659,404,712.03

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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.