Home / 513,620,120,431.35-708,797,422,417.85-285,249,362,417.40

Finding the Fourth Proportional to 513,620,120,431.35, 708,797,422,417.85 and 285,249,362,417.40

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Solution

The fourth proportional to 513,620,120,431.35, 708,797,422,417.85 and 285,249,362,417.40 is: 393,645,039,952.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,620,120,431.35 : 708,797,422,417.85 = 285,249,362,417.40 : x
  2. Step 2: Convert to fraction form
    513,620,120,431.35/708,797,422,417.85 = 285,249,362,417.40/x
  3. Step 3: Cross multiply
    513,620,120,431.35x = 708,797,422,417.85 × 285,249,362,417.40
  4. Step 4: Simplify right side
    513,620,120,431.35x = 202,184,012,827,788,249,661,440
  5. Step 5: Solve for x
    x = 202,184,012,827,788,249,661,440/513,620,120,431.35
  6. Step 6: Final answer
    x = 393,645,039,952.85

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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.