Home / 390,006,896,648.04-538,213,880,598.15-216,395,179,616.52

Finding the Fourth Proportional to 390,006,896,648.04, 538,213,880,598.15 and 216,395,179,616.52

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Solution

The fourth proportional to 390,006,896,648.04, 538,213,880,598.15 and 216,395,179,616.52 is: 298,627,768,803.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,006,896,648.04 : 538,213,880,598.15 = 216,395,179,616.52 : x
  2. Step 2: Convert to fraction form
    390,006,896,648.04/538,213,880,598.15 = 216,395,179,616.52/x
  3. Step 3: Cross multiply
    390,006,896,648.04x = 538,213,880,598.15 × 216,395,179,616.52
  4. Step 4: Simplify right side
    390,006,896,648.04x = 116,466,889,364,140,919,357,440
  5. Step 5: Solve for x
    x = 116,466,889,364,140,919,357,440/390,006,896,648.04
  6. Step 6: Final answer
    x = 298,627,768,803.91

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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.